After 2 years my leaking AC problem has returned. The first time I fixed it I was unable to find a clog in the drain and used caulk over the seal between the unit and the firewall. I assume that the seal is what is causing the problem because I was not able to find a clog. I called the dealer today to schedule the service but they were unable to provide me a solid price estimate. I'm assuming because of the work involved with accessing the seal it will be fairly expensive. My question is, has anyone had this done at the dealer and what does it cost?